[Xen-devel] [PATCH] passthru: Fix pci bar remapping for passthru devices

[Wei Wang2 <wei.wang2@xxxxxxx>]

Hi, 
When guest code tries to get the block size of mmio, it will write all "1"s 
into pci bar register and then qemu will return all "0"s to the don't care 
bits in the emulated bar register to indicate the block size to guest code. 
In this case, we should not create p2m mapping in  pt_bar_reg_write() and
pt_exp_rom_bar_reg_write(). Attached patch fixes this issue, additional 
comment can be found in the patch.

Thanks,
Wei

Signed-off-by: Wei Wang <wei.wang2@xxxxxxx>
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Attachment: mmio.patch
Description: Text Data

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